Root zone
These servers manage the DNS root zone
all servers delegate to
in-addr.arpa.
These servers manage the in-addr.arpa zone
all servers delegate to
145.in-addr.arpa.
These servers manage the 145.in-addr.arpa zone
all servers delegate to
100.145.in-addr.arpa.
These servers manage the 100.145.in-addr.arpa zone